
Spoiler Warning: There are spoilers ahead for Star Trek: Picard Season 1, Star Trek: Discovery Season 2, Star Trek: Voyager, and other iterations of the franchise.
Star Trek: Discovery’s premiere brought back Sarek, Spock’s father who had been first introduced in The Original Series. Season 2 saw Spock himself as well as Captain Pike and Number One make appearances, so Discovery is a series that has no qualms about reintroducing legacy characters. But its 23rd Century, pre-The Original Series setting precluded the use of most of Star Trek’s characters, as the bulk of the franchise’s 780+ episodes and films take place later in the timeline.
Discovery’s move forward in time should also mean that no legacy characters could have significant roles. After all, who could possibly still be alive more than eight centuries after the events of Star Trek: Picard? I can think of one character, but not in the way you might expect!

As a hologram who doesn’t age, we could definitely argue that The Doctor – played by Robert Picardo for all seven seasons of Star Trek: Voyager – might have survived this long. But that isn’t the angle I’m taking.
The 23rd episode of Season 4 of Star Trek: Voyager, Living Witness, takes place in the 31st Century. After the USS Voyager had an encounter with a species called the Kyrians in the 24th Century, some pieces of technology were left behind, including a backup copy of The Doctor. Reawakened in the 31st Century, he stayed with the Kyrians for a number of years, righting the wrongs in their historical records about Voyager and its crew.
The episode is interesting in itself, and well worth a watch, but from our point of view today what I want to consider is the episode’s ending. After living with the Kyrians for years – perhaps decades – The Doctor took one of their ships and left the planet, hoping to retrace Voyager’s path and return to the Alpha Quadrant.

We know from later seasons of Voyager that it only took them another three years or so after leaving Kyrian space to make it home – though that did involve the use of the Borg transwarp network, among other helping hands – so the journey is definitely achievable. The Doctor, unlike us mere humans, doesn’t need food or any other supplies personally, so as long as his ship was functional, even if it took him decades he would have been able to make it back to Federation space – and if it took him several decades, the timeline starts to line up for a crossover with Discovery.
One thing that I’m cautiously interested in when it comes to Discovery’s third season is the potential to learn more about what happened to some of the characters we knew in other Star Trek shows. Perhaps we won’t learn the specifics of what happened to individuals, but we may learn broad strokes about what happened to their planets and cultures, and we could infer from that what may have happened to them. The series looks – if we take its trailer at face value – as if part of the story will be about restoring a declining or defeated Federation. Characters who originated in an era where the Federation was strong and just would be well-suited to that task, and they may find an unlikely ally in this version of The Doctor.

On the production side of things, Star Trek has recently had great success bringing back Brent Spiner as Data and Sir Patrick Stewart as Jean-Luc Picard. Spiner’s role as Data is a great comparison, because both Data and The Doctor are artificial, and thus not susceptible to ageing. Brent Spiner had said as early as the mid-2000s that he felt he’d “aged out” of the role of Data, yet the makeup and visual effects used in Star Trek: Picard worked very well. Obviously if you try to compare the way he looked earlier this year to the way he looked in 1987’s Encounter at Farpoint there’s a difference, but it’s not immersion-breaking. All this is to say that there’s no reason why Robert Picardo couldn’t reprise his role too.
Digital de-ageing effects have been used more and more often in recent years, even on television, and while the technology isn’t cheap, it shouldn’t be prohibitively expensive either. So that option would be viable for the team behind Star Trek as well.
But the big question is what kind of role The Doctor could play in a 32nd Century Discovery story.

If I were writing it, the way I’d see him involved would be working alongside Burnham, Saru, and the crew of Discovery to restore the Federation. They’re looking at things from a 23rd Century viewpoint, but The Doctor could fill in more than a century’s worth of gaps in their knowledge. The Federation in the 24th Century is very similar to how it was in the 23rd in terms of morals and outlook, so I could absolutely see them working in common cause.
Rebuilding or reinvigorating the Federation is a noble task, and while I’ve documented my misgivings about Star Trek taking on a kind of post-apocalyptic setting previously, one way I think it could be made to work is if at the end of the season the Federation was back up and running. The Doctor could be invaluable to Discovery’s crew in accomplishing such a task, and with Data now permanently gone from the Star Trek universe, there aren’t many others who could still be around in this era.

Perhaps after Season 2, which brought back several legacy characters for major roles, Discovery wants to stand on its own two feet again. Indeed, part of the reason for shifting the show’s timeline so far into the future is specifically because the producers and showrunners wanted to get away from the constraints of the 23rd Century – and the fan criticisms that came as a result of using that setting. So perhaps bringing back a legacy character in Season 3 isn’t on the agenda.
But The Doctor could still appear in Season 4 – and reports suggest that pre-production is underway on Discovery’s next adventure. While I think that The Doctor could be a good fit for a “rebuilding” type of storyline for the reasons already mentioned, if Season 4 takes the show in a different direction, perhaps that would be something more suited to his medical expertise, such as curing a disease. For all we know at this stage, a disease could be involved in damaging the Federation in this time period!
If not The Doctor, there are a few other characters who could – in theory – still be active in the 32nd Century. Let’s look at them briefly:
Number 1: Soji

Spoiler warning for Star Trek: Picard Season 1, but Soji is synthetic; an android. At the end of the season, Picard was told that his new synthetic body wouldn’t keep him alive for centuries, but there’s no reason Soji should have the same limitation. In many ways, Soji would make for a better crossover character than almost anyone else, as she’s a main character in an ongoing series. The crossover would thus be between two Star Trek shows that are currently in production, providing a link between them.
We could also add into the mix the other synths from Coppelius, including Sutra (aka Evil Soji) and even Dr Soong, if he was successful in creating himself a new synthetic body (and there’s no reason why he wouldn’t have been).
Number 2: Lore

Lore was said to have been disassembled after his final appearance in The Next Generation, but we learned nothing of his fate after that. I speculated during Star Trek: Picard’s first season that Dr Maddox may have had access to Lore’s components while working on Soji and the other synths, but this was never confirmed on screen. It’s at least possible that Lore survived in disassembled form until the 32nd Century.
However, with Star Trek having gone out of its way to write Data out of the franchise, and to give Brent Spiner a new character in Dr Soong, I think any re-emergence of Lore is highly unlikely.
Number 3: Benjamin Sisko

I’ve mentioned Captain Sisko so often in relation to characters who could re-appear that you may think he’s become an obsession of mine! However, his story as of the end of Deep Space Nine was deliberately written in such a way that he could come back at literally any point in the Star Trek timeline. After being saved by the Bajoran Prophets, Sisko went to stay with them for a while – and they exist outside of linear time, meaning he could essentially travel to any point in time, including the 32nd Century.
Avery Brooks, who played Sisko, hasn’t always seemed willing to reprise the role, and recently declined to appear in the documentary What We Left Behind. However, there’s no reason why the character couldn’t be recast for future appearances.
Number 4: The Dax symbiont

While still arguably unlikely, this seems perhaps the least-unlikely of all the characters we’ve looked at so far. The trailer for Discovery’s third season showed Trill characters as well as what looked like a scene set on the Trill homeworld. We know, thanks to Deep Space Nine, that Trill symbionts can live for centuries; how many centuries exactly has never been stated as far as I’m aware. That leaves an opening for Discovery to bring back Dax – as well as an excuse to recast the character.
With centuries of knowledge, Dax could be a huge help to the crew of Discovery for the same reasons we’ve already talked about. Rebuilding the Federation will be a huge task, and it will take people who knew how it worked to help out.
So that’s it. A handful of other characters to go along with The Doctor who could – but probably won’t – appear in Star Trek: Discovery’s 32nd Century setting. As the show gets nearer to being broadcast (mid-October, in case you missed that announcement) my optimism is growing. Season 2 was decent, and despite my misgivings about taking the series away from its setting and into the far future, I think it has potential to tell interesting stories. I’m cautiously optimistic!
It seems unlikely that The Doctor, or any of the other characters mentioned, will make an appearance, but from an in-universe perspective it’s not entirely impossible. We’ve seen with Star Trek: Picard that bringing back legacy characters and referencing events that took place in a past episode or story are both things that the people in charge of Star Trek are willing to consider, so it’s at least possible to think we could see someone from the past reappear in Discovery.
Most of all, this was a bit of fun. We got to look back at Living Witness, which was a unique entry in Star Trek: Voyager, as well as speculate on the fates of The Doctor and some other well-known characters from past and present iterations of Star Trek. I’ll take any excuse to spend more time in the Star Trek galaxy!
Star Trek: Voyager is available to watch now on CBS All Access in the United States, and on Netflix in the United Kingdom and elsewhere. Star Trek: Discovery Season 3 will be available to stream beginning on the 15th of October 2020. The Star Trek franchise – including all properties mentioned above – is the copyright of ViacomCBS.